用了网上说的修改 ? ?vim /usr/share/vim/vim81/syntax/c.vim?方法，没有效果，用下面的方法修改成功。
?
打开Terminal，输入如下命令：
cd /usr/share/vim sudo vim vimrc
两行命令之后，会出现VIM，在set backspace=2这行下插入如下配置
set ai " auto indenting
set history=100 " keep 100 lines of history
set ruler " show the cursor position
syntax on " syntax highlighting
set hlsearch " highlight the last searched term
filetype plugin on " use the file type plugins
" When editing a file, always jump to the last cursor position
autocmd BufReadPost *
\ if ! exists("g:leave_my_cursor_position_alone") |
\ if line("'\"") > 0 && line ("'\"") <= line("$") |
\ exe "normal g'\"" |
\ endif |
\ endif
然后保存退出VIM。